BAHAHA is a kind of laugh used when you dont want to use the normal *laugh* or 'lol' on a messenger so if u want to use that its quite cool to use it... u can also use this as an expression of 'its so funny' or 'that is not funny'
BAHAHAHA your gay!!! or a another example is BAHAHAHA you looked so stupid on the dance floor last night u looked like u came from the mental institution BAHAHAHA
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.